Combined weft detecting and transferring mechanism



Dec. 27,1927.-

` A. J. cHEvREfrTL-:j v COMBINED WEFT'DETEGTING AND TRANSFERRNG' KECHANISW Filed March 19. 1925 ze Hummm UWM www *www Patented Dec. 27, 1927.

UNITED STATES lyiiid i2 PATENT OFFICE;

AUGUSTIN J. CHEVR'E'ITE, 0F WORCESTER, MASSACHUSETTS, .ASSIGNOR TO CROMPTON & KNOWLES LOOM WORKS, 0F WOIZCJES'SER, CASSACH''SETTS, A CORPORATION OF MASSACHUSETTS.

COMBINED WEFT DETECTING AND TRANSFERRINGMECHANISM.

Application filed March 19, 1925. Serial No. 16,749.

This invention relates to wett detecting niechnnisni ot the type shown in prior pat ent to Ryon No. 1,372,316 ot March 2i, 192i.

The detector shown in said patent is mounted on the transterrer erin of the replenishing mechan' in and the latter is given a periodic dowinvard moi/'ement on each al ternate beat ot the lay to present the detector carried thereby to the yarn inthe active shuttle.

ln such mechanisms it has heen 'found that the tiine tor operating the detecting mechanism is very short, the detectoll necessarily entering the top orithe shuttle, detecting .the yarn, and moving ont ot the slnittle during the hrict` interval that the lay is at the eX- trenie :forward 'part ot its heat. In the ai'oresaid patent the device tor reciprocating the transterrer arm comprises a cam with a steep point and a cooperating lever and roll het it has heen YFound that the necessary clearance between the roll and the cani causes :i lof-is oli' motion which permits the transterrer arin and hence the detecting mechanism to reinain in lowest position longer than is desired. In order to overcome these disadvantages l have provided resili ont .ine-ans :tor returning the transi'errer troni its lowest position as soon as the cani will permit such motion, this mechanism including a spring mounted independently ot the transterrer mechanism and having' a lost niotion connection therewith which. permits the trans'terrer to have a iree motion under control. otl the cani at all times except when said transferrer and detector are near the shuttle.

it is a further ohject oit niy invention to provide resilient means supported independently oi the transiterrer arm and capable oi' adjustments which in no way all'ect the on eration ot the detecting niechanisni.

1With these and other objects in 'View which will appear as the description proceeds, iny invention resides in the coinhination and arrangement ot' parts hereinafter described and set forth in the claims.

In the accompanying `drawings wherein I have shown one `torni oit my invention,

Fig. l is a central vertical section through a weft replenishing loom oi the multi-color type looking in the direction ot the detecting mechanism which is associated with my invention,

Fig. is an enlarged end view looking in the direction ot arrow 2. Fie: l. and

Fig. 3 a view loolizing in the direction of arrow El, litiga 2.

llvoiterringto the drawings, looin traine l() which is connected as at 19 to lever 20. Said lever 20 is pivotally connected as at 21 to a stand 22 secured 'to the traine l0 and has mounted on the rearwardly extending arm 253 thereoit a roll 24:. Said roll is located in a groove et ca-in 2G. Said cain is secured to the hottoni shaft 2f and has a, point 28 `which serves to raise the rear end of the lever when the lay 29 approaches iront center on alternate heats. The hottorn shaft 27 rotates once tor every two picks ot the loom and the trons't'errer arni 13 is thereit'ore given a dowmvard motion every second pick when the shuttle is at the magazine end of the looni.

As previously stated it has been found that the detector remains in lowest position longer than is desirable because of the time required to reverse the direction ot movement oit lever 20 and inv invention relates to means to litt the detector as soon as possible after detecting. n order to require the detector to start on its upward movement as soon as possible l provide the transierrer arm with an extension 4:0 to which secured a pin or other proiection lil. Said pin @tl extends through a slot 4t2 formed in the lower end of a link 43 the runner end of which is threaded at 4d: to receive nut 45. it hess et@ is `formed integral with the replenishing mechanism ll and has extending theretln'ongh an opening i7 somewhat larger than link d3 to pei-init the latter to inove freely therethrough. The lower end of the link is provided. with shoulders 48 against which the lower end of a compression spring a detector ifi adapted 49 presses. The upper end of spring 49 engages the boss 46 and is constantly under compression to hold the link yieldingly in lower position.

The osition of the pin 41 with respect lto the s ot 42 is such that said pin will not Vtransferrer is made to start on its upper movement without loss of time and the lay can carry the shuttle S backwardly without having the forward wall of the shuttle engage the lower end of the detector 14.

Slot 42 is long enough to permit the trans- 'errer arm to be moved upwardly under actionot the cam 26 to actuate the replenishing mechanism as set forth in the aforesaid Patent No. 1,372,316, the spring 49 being idle and not aiecting the transferrer arm at such times. In order to keep the link 43 in operative relationship with the pln 41 I may employ a washer 5() and Cotter pin 51 between which and the arm 40 is located the slotted end of the link 43.

I am aware that Patent No. 1,345,508 issued to Ryon July 6, 1920, shows a spring which may operate to litt the transferrer arm from its lowest position but in this patent the spring actuates the plunger of an air compressor and is necessarily supported entirely by the transferrer arm. Also, adjustments of the spring which are found desirable in the construction set forth herein are not possible in the said patent without affecting the operation of the weft detector.

From the foregoing it will be seen that I have' provided a resilient mechanism for starting the transferrer arm on its upward movement without loss of time, said mechanism being supported independently of the transferrer arm and being capable of adjustments which in no way attect the operation of the detecting mechanism.

Having thus described my invention it will be apparent that changes and mm'lifications may be made therein hy thosey skilled in the art without departing from the spirit and scope o'l the invention, and I do not wish to he limited to the details herein disclosed, hut what I claim is:

1. In a wett replenishing loom, a eomhiued weft detecting and transferring mechanism, means to lower and raise said mechanism toward and from the shuttle at regular intervals, resilient mechanism to he operatively connected to the transferrer arm onlyv at such times as the latter is near the lower limit of its travel, and means to support said resilient mechanism independently of and adjustable with respect te the transfer-rer arm. said resilient mechanism having a lost motion connection with the transferrer arm to disconnect the resilient mechanism from the transfer-rer arm as the latter approaches the upper limit ot its travel.

2. In a wett repleuishing loom, a eomhined weft detecting and transferriner mechanism, means to loweiI and raise said mechanism toward and from the shuttle at regular intervals, resilient mechanism to be operativelyv connected with the transferrer arm as the llatter approaches the lower` limit ot its travel and as said transterrer arm starts on the upward movement after reaching its lowest limit of travel, said resilient mechanism conlprisingr a link the lower end ot which is slotted, a coil springr interposed hetween thel link and the trame of the replenishing mechanism and an element extendner from the transferrer arm in the said slot.

In testimony whereof I have hereunto a fxed my signature.

AUGUSTIN J. CHEVRICVIIC. 

